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Triethyl phosphate

CAS No.
78-40-0
Chemical Name:
Triethyl phosphate
Synonyms
TEP;Triethylphosph;Triethylfosfat;ETHYL PHOSPHATE;Phosphoric ether;Ethyl phosphate, tri-;TRIETHYL ORTHOPHOSPHATE;Ethyl phosphate ((EtO)3PO);Triethylphosphatecolorlessliq;o-Phosphoric acid triethyl ester
CBNumber:
CB1854370
Molecular Formula:
C6H15O4P
Molecular Weight:
182.15
MDL Number:
MFCD00009077
MOL File:
78-40-0.mol
MSDS File:
SDS
Last updated:2023-12-22 17:53:22

Triethyl phosphate Properties

Melting point -56 °C
Boiling point 215 °C (lit.)
Density 1.072 g/mL at 25 °C (lit.)
vapor density 6.28 (vs air)
vapor pressure 1 mm Hg ( 40 °C)
refractive index n20/D 1.403(lit.)
Flash point 240 °F
storage temp. Store below +30°C.
solubility 500g/l (slow decomposition)
form Liquid
Specific Gravity 1.072
color Clear
PH 7 (H2O, 20℃)
Odor mild cider
explosive limit 1.2-10%(V)
Water Solubility SOLUBLE
Hydrolytic Sensitivity 7: reacts slowly with moisture/water
Merck 14,9674
BRN 1705772
Dielectric constant 7.2(20℃)
Stability Stable. Combustible. Incompatible with strong oxidizing agents, water.
InChIKey DQWPFSLDHJDLRL-UHFFFAOYSA-N
LogP 1.11 at 20℃
Indirect Additives used in Food Contact Substances TRIETHYL PHOSPHATE
FDA 21 CFR 175.105
CAS DataBase Reference 78-40-0(CAS DataBase Reference)
FDA UNII QIH4K96K7J
NIST Chemistry Reference Triethyl phosphate(78-40-0)
EPA Substance Registry System Triethyl phosphate (78-40-0)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H302-H319
Precautionary statements  P305+P351+P338
Hazard Codes  Xn
Risk Statements  22-36
Safety Statements  25-26
WGK Germany  1
RTECS  TC7900000
Autoignition Temperature 845 °F
TSCA  Yes
HS Code  29190090
Toxicity LD50 orally in Rabbit: 1165 mg/kg
NFPA 704
1
1 1

Triethyl phosphate price More Price(28)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.21141 Triethyl phosphate for synthesis 78-40-0 100mL $37.3 2024-03-01 Buy
Sigma-Aldrich 8.21141 Triethyl phosphate for synthesis 78-40-0 1L $125 2024-03-01 Buy
Sigma-Aldrich 538728 Triethyl phosphate ReagentPlus , ≥99.8% 78-40-0 1l $118 2024-03-01 Buy
Sigma-Aldrich 538728 Triethyl phosphate ReagentPlus , ≥99.8% 78-40-0 4l $248 2024-03-01 Buy
TCI Chemical P0270 Triethyl Phosphate >99.0%(GC) 78-40-0 25g $18 2024-03-01 Buy
Product number Packaging Price Buy
8.21141 100mL $37.3 Buy
8.21141 1L $125 Buy
538728 1l $118 Buy
538728 4l $248 Buy
P0270 25g $18 Buy

Triethyl phosphate Chemical Properties,Uses,Production

Chemical Properties

Triethyl Phosphate (TEP) is a colorless, high-boiling liquid and containing 17 wt % phosphorus; mild odor. Very stable at ordinary temperatures, compatible with many gums and resins, soluble in most organic solvents, miscible with water. When mixed with water is quite stable at room temperature, but at elevated temperatures it hydrolyzes slowly.
Triethyl phosphate
TEP is useful as a solvent in many applications, as a plasticizer for tough, fire-resistant plastics, and as an agricultural chemical as an intermediate in preparing tetraethyl pyrophosphate (TEPP).
Like other phosphate esters, Triethyl phosphate damages nerves and is a cholinesterase inhibitor. It is regarded as moderately toxic. Two other alkyl phosphates with toxicities probably similar to that of triethylphosphate are tributylphosphate, (n-C4H9O)3PO, and tris(2-ethylhexyl)-phosphate, (C8H17O)3PO.

Uses

Triethyl phosphate is use as a flame retardant in the manufacture of polyisocyanurate (PIR) and polyurethane (PUR) foam insulation and thermoset plastic products. The chemical compound is also used as a viscosity reducer in plastic resins, and as a catalyst, solvent or intermediate in the production of pesticides, pharmaceuticals, lacquers and other products.As ethylating agent; formation of polyesters which are used as insecticides.

Production Methods

Triethyl phosphate is manufactured from diethyl ether and phosphorus pentoxide via a metaphosphate intermediate.
Prepared by the reaction of tetraethyl hypophosphate with ethanol in the presence of aluminum ethoxide or by treating triethyl phosphate with diethyl hydrogen phosphate.

Definition

ChEBI: Triethyl phosphate is a trialkyl phosphate that is the triethy ester derivative of phosphoric acid. It derives from an ethanol.

Synthesis Reference(s)

The Journal of Organic Chemistry, 25, p. 1000, 1960 DOI: 10.1021/jo01076a035

General Description

Triethyl phosphate [78-40-0] is a colorless, corrosive liquid. Combustible. Slowly dissolves in water and sinks in water. Severely irritates skin, eyes and mucous membranes. It is manufactured from diethyl ether and phosphorus pentoxide via a metaphosphate intermediate. Triethyl phosphate has been used commercially as an additive for polyester laminates and in cellulosics. In polyester resins it functions as a viscosity depressant and as a flame retardant. The viscosity-depressant effect of triethyl phosphate in polyester resin permits high loadings of alumina trihydrate,a fire-retardant smoke-suppressant filler. Triethyl phosphate has also been employed as a flame-resistant plasticizer in cellulose acetate.Because of its water solubility the use of triethyl phosphate is limited to situations where weathering resistance is unimportant.The halogenated alkyl phosphates are generally used for applications where lower volatility and greater resistance to leaching are required.

Air & Water Reactions

Slowly dissolves in water with slight decomposition .

Reactivity Profile

Organophosphates, such as Triethyl phosphate, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.

Health Hazard

May be harmful by inhalation, ingestion or absorption. May cause irritation.

Fire Hazard

Special Hazards of Combustion Products: May produce hazardous decomposition products such as carbon dioxide, carbon monoxide and oxides of phosphorus.

Flammability and Explosibility

Non flammable

Safety Profile

Triethyl Phosphate is a flame retardant that exhibits low acute toxicity after oral, dermal or inhalation exposure. It is moderately toxic by ingestion, intraperitoneal, and intravenous routes. Experimental reproductive effects. Mutation data reported. Causes cholinesterase inhibition, but to a lesser extent than parathion. May be expected to cause nerve injury similar to that of other phosphate esters. Triethyl phosphate is stable under normal conditions of use. Avoid contact with strong bases and oxidizing agents. Triethyl phosphate is combustible at high temperatures. Heating to decomposition may release carbon dioxide, carbon monoxide, phosphorus oxides and other potentially toxic fumes or gases. Avoid heat, open flames and other potential sources of ignition.

64-17-5
78-40-0
Synthesis of Triethyl phosphate from Ethanol
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View Lastest Price from Triethyl phosphate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Triethyl phosphate pictures 2024-03-19 Triethyl phosphate
78-40-0
US $0.00-0.00 / Kg/Drum 1KG 99% 5000 Jinan Finer Chemical Co., Ltd
Triethyl phosphate pictures 2023-12-23 Triethyl phosphate
78-40-0
US $50.00-1.00 / KG 1KG 99% g-kg-tons, free sample is available Henan Fengda Chemical Co., Ltd
Triethyl phosphate pictures 2023-11-15 Triethyl phosphate
78-40-0
US $20.00-1.00 / kg 1kg 0.99 10 tons Hebei Yanxi Chemical Co., Ltd.
ETHYL ACID PHOSPHATE AURORA KA-1638 PHOSPHORIC ACID TRIETHYL ESTER Ethyl phosphate, TEP Phosphoric acid ethyl Phosphoric acid triethyl Triethyl phosphate 5g [78-40-0] Triethyl phosphate 10g [78-40-0] Triethyl phosphate,Ethyl phosphate, TEP Triethyl phosphate,Ethyl phosphate Triethyl phosphate, 99% 1KG Triethyl Phospate(TEP) TEP)Triethyl phosp Triethyl Phosphate,FlaMe retardants TEP Triethyl phosphate ReagentPlus(R), >=99.8% TRIETHYL PHOSPHATE (C2H5O)3PO phosphatedetriethyle triethoxyphosphineoxide Tris(ethyl) phosphate Triethyl Phosphate (TEP) TRIETHYL PHOSPHATE, 99.8+% TRIETHYL PHOSPHAYE TriethylPhosphate,~99% Triethylphosphate,98+% Phosphorsuretriethylester O,O,O-Triethylphosphate TEP Ethyl phosphate Phosphoric Acid Triethyl Ester Triethyl phosphate Vetec(TM) reagent grade, 98% Flame Retardant TEP Triethyl Phospate Cefuroxime Impurity 46 TRIETHYL PHOSPHATE, 99%TRIETHYL PHOSPHATE, 99%TRIETHYL PHOSPHATE, 99% Triethylphosphate@100 μg/mL in MeOH Triethyl phosphate (TEP) @100 μg/mL in Toluene TriethylPhosphate> TRIETHYL PHOSPHATE FOR SYNTHESIS riethylphosphate ETHYL PHOSPHATE TEP Triethylphosph Ethyl phosphate ((EtO)3PO) Ethyl phosphate, tri- o-Phosphoric acid triethyl ester Phosphoric ether Triethylfosfat Triethylphosphatecolorlessliq TRIETHYL ORTHOPHOSPHATE Fire retardant TEP Synoflex? TEP / Triethyl phosphate Trithyl phosphate 78-40-0 78-40-4 5578-40-0 78400 C6H15O4P CH3CH2O2PO CH3CH2O3PO